What is the formula for a mouthwash with 0.5 mg/5 ml dexamethasone for stomatitis in a cancer patient?

How can a mouthwash containing 1.2 ml of chlorhexidine digluconate 20%, 100 g of sorbitol syrup 70%, 1 g of banana aroma, and water up to 200 ml be given a better taste for a 10-year-old cancer patient, given that the flavor was unsatisfactory without the aroma, and is banana aroma a suitable choice in combination with chlorhexidine; furthermore, is a 200 ml volume too large to dispense at once considering the sorbitol content and the risk of fungal growth in the mouthwash?

How can macrogol suppositories be prepared according to a prescription for 30 units so that they do not crack?

What is your opinion on a formulation for an oily lotion with keratolytic properties containing 10% salicylic acid, 10% urea, 10 g ethanol, 10 g polyethylene glycol, and peanut oil up to 100 g, as requested by the doctor?

Regarding the preparation of resorcinol in Lanette wax cream, which the doctor suggests as an alternative to the hydrophilic anionic cream TMF or Beeler Base mentioned for resorcinol in cetomacrogol cream, will mixing it into the existing base and processing it with a steady mill ensure the necessary fineness?

How can a povidone-iodine pasta consisting of 10% povidone-iodine, 150 g vaseline, 60 g sesame oil, and 90 g zinc oxide be prepared using iodine tincture when povidone-iodine is unavailable, and how should the conversion be calculated given that the Merck Index does not provide data on the iodine percentage within that polymer structure?

What are the stability problems of a solution containing 3 grams of Phenobarbital sodium and purified water up to 300 cc?